Hi there, yanob42961715!
Adobe Lightroom for Mobile is the version that you would use on your iPad. It has a different interface than the desktop app and is meant to work in tandem with the desktop app. If this is what you're looking for, you can use the mobile app for free with a 30-day trial, but to keep access, you will need a Creative Cloud membership plan with Lightroom 5.4 or later or Lightroom CC. Check out the Adobe Lightroom for Mobile FAQ for more info: Download Lightroom for mobile | Adobe Lightroom for mobile
Let me know if this helps and if there's anything else I can do for you.
(moving this thread to the Photoshop Lightroom forum)